feat: add 15 new Japan cultural facts with kanji and explanations

data/community-content/japan-facts.json

@@ -702,5 +702,19 @@
   "The Japanese word 'yoisho' (よいしょ) is an exclamation people make when sitting down, standing up, or lifting something - it has no direct translation.",
   "Japan has 'maid cafes' where waitresses dress as maids and treat customers as masters, calling them 'goshujin-sama' (master).",
   "The concept of 'omotenashi' (おもてなし) is Japanese hospitality - anticipating guests' needs before they even ask.",
-  "Japanese has a word 'kuchisabishii' (口寂しい) meaning 'lonely mouth' - eating when you're not hungry just because your mouth is bored."
+  "Japanese has a word 'kuchisabishii' (口寂しい) meaning 'lonely mouth' - eating when you're not hungry just because your mouth is bored.",
+  "The Japanese word 'boketto' (ぼけっと) means staring into the distance without thinking about anything specific - a kind of pleasant mental vacancy.",
+  "Japan has 'randoseru' (ランドセル) - sturdy leather backpacks that elementary school students use for all six years, originally inspired by Dutch military knapsacks.",
+  "The concept of 'honne' (本音) and 'tatemae' (建前) describes the contrast between one's true feelings and the face shown in public - a key part of Japanese social dynamics.",
+  "Japan has 'setsubun' (節分) where people throw roasted soybeans to drive away evil spirits, shouting 'oni wa soto, fuku wa uchi' (demons out, luck in).",
+  "The Japanese word 'kuuki wo yomu' (空気を読む) means 'to read the air' - understanding social situations and unspoken expectations without being told.",
+  "Japan's 'hatsumode' (初詣) is the first shrine visit of the new year, with over 80 million people visiting shrines in the first three days of January.",
+  "The word 'majime' (真面目) describes someone who is earnest, diligent, and takes things seriously - a highly valued trait in Japanese culture.",
+  "Japan has 'hanami' (花見) parties where people gather under cherry blossom trees to eat, drink, and celebrate the fleeting beauty of spring.",
+  "The Japanese practice of 'kintsugi' (金継ぎ) repairs broken pottery with gold, making the cracks part of the object's history rather than something to hide.",
+  "Japanese has the word 'amae' (甘え) describing the desire to be lovingly cared for - a concept so culturally specific that psychologists study it as uniquely Japanese.",
+  "Japan's 'obon' (お盆) festival honors deceased ancestors with lantern lighting, dancing (bon odori), and floating lanterns on rivers to guide spirits home.",
+  "The word 'ganbaru' (頑張る) means to do your best and persevere - it's one of the most commonly used encouragements in Japanese daily life.",
+  "Japan has 'onsen tamago' (温泉卵) - eggs slowly cooked in natural hot spring water, resulting in a uniquely silky texture different from any other cooking method.",
+  "The Japanese concept of 'ma' (間) refers to the meaningful pause or negative space in art, music, and conversation - silence itself is communication."
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